Electro-Harmonix
Big Muff Pi
$83Cheaper
Released 2001-05
Best Guitar Effects Pedals · head-to-head
Big Muff Pi vs UAFX Dream '65 Reverb Amplifier
A sourced, side-by-side comparison. Big Muff Pi is cheaper at $83. Every spec and price links to its source.
Universal Audio
UAFX Dream '65 Reverb Amplifier
$333
Released 2022-05
Which is better: the Big Muff Pi or UAFX Dream '65 Reverb Amplifier?
On the specs we track, they're closely matched. The Big Muff Pi is the cheaper at $83.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Big Muff Pi | UAFX Dream '65 Reverb Amplifier |
|---|---|---|
| US price | $83 | $333 |
| Brand | Electro-Harmonix | Universal Audio |
| Released | 2001-05 | 2022-05 |
| Effect type | fuzz / distortion / sustainer | amp modeler — blackface-style combo amp emulation with built-in spring reverb, vibrato, and 3 selectable boost circuits |
| True bypass | — | — |
| Power draw ma | 3 | 400 |
| Preset count | — | — |
| Stereo io | No | Yes |
| Tap tempo | — | — |
| Midi support | No | No |
| Expression input | No | — |
| Dimensions (in) | 5.5 x 6.9 x 3.0 | 3.6 x 2.6 x 5.6 |
Sources — Big Muff Pi: thomannmusic.com (verified 2026-08-01). UAFX Dream '65 Reverb Amplifier: thomannmusic.com (verified 2026-08-01).
What's the difference between the Big Muff Pi and UAFX Dream '65 Reverb Amplifier?
Where the two actually differ on the specs we track (4 of 9). Matching specs are omitted.
- Effect type: Big Muff Pi fuzz / distortion / sustainer vs UAFX Dream '65 Reverb Amplifier amp modeler — blackface-style combo amp emulation with built-in spring reverb, vibrato, and 3 selectable boost circuits
- Power draw ma: Big Muff Pi 3 vs UAFX Dream '65 Reverb Amplifier 400
- Stereo io: Big Muff Pi false vs UAFX Dream '65 Reverb Amplifier true
- Dimensions (in): Big Muff Pi 5.5 x 6.9 x 3.0 vs UAFX Dream '65 Reverb Amplifier 3.6 x 2.6 x 5.6